Comparison of Chestnut Soils of Central Asia with Their Analogs in Other Soil-Geographical Provinces of the Dry-Steppe Zone of the Eurasian Subboreal Belt

Pankova, E. I.; Черноусенко, Г. И.

doi:10.1134/s2079096118020051

Cited by 11 publications

(3 citation statements)

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“…Source C . As shown in Figures 3b–3g, multiple dust episodes occurred at the desert steppe located east of the Caspian Depression on the Aktobe‐Atyrau regional border, where the soil type is dominated by Chestnut soils with a high content of exchangeable sodium and magnesium ions, known as Solonetz or Solonetzic soil (Pachikin et al., 2014; Pankova & Chernousenko, 2018). Loss of vegetation cover due to drought and/or overgrazing can expose the unconsolidated, fine‐textured Solonetz soils to wind erosion.…”

Section: Resultsmentioning

confidence: 99%

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On the Geomorphic, Meteorological, and Hydroclimatic Drivers of the Unusual 2018 Early Summer Salt Dust Storms in Central Asia

2023

JGR Atmospheres

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A series of synoptically forced dust events, including an extreme salt storm from the Aralkum desert, stuck large parts of Central Asia during early summer 2018, causing flight cancellation, widespread haze, and salt deposition on croplands. This manuscript explores the geomorphic, meteorological, and hydroclimatic drivers of the unusual dust activity based on the three prerequisite factors of dust outbreak: sediment supply, sediment availability, and dust‐uplifting winds. Dry lake beds and lower river floodplains are identified as the source area of frequent dust episodes likely due to the abundant supply of fine‐grain sediments. Whereas, minimal dust activity was detected at the region's major sandy deserts. The salt dust storms were triggered by cold intrusion and strong postfrontal winds at the southeast flank of a rapidly developing anticyclone over western Russia which was enhanced by the Scandinavian blocking upstream. The 2018 early summer dust events in Central Asia were identified as part of spatially compounding weather hazards linked to a slow‐moving synoptic wave pattern across the Northern Hemisphere midlatitudes. Finally, the aeolian sediment availability at the dust source areas was enhanced by below‐average soil moisture and vegetation during summer 2018 linked to reduced precipitation in the preceding winter. The 2017/18 winter precipitation deficit was driven by a double‐dip, Central Pacific La Niña episode associated with large‐scale precipitation‐suppressing subsidence and enhanced moisture flux divergence over Central Asia.

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Section: Resultsmentioning

confidence: 99%

“…with a high content of exchangeable sodium and magnesium ions, known as Solonetz or Solonetzic soil (Pachikin et al, 2014;Pankova & Chernousenko, 2018). Loss of vegetation cover due to drought and/or overgrazing can expose the unconsolidated, fine-textured Solonetz soils to wind erosion.…”

Section: Source Bmentioning

confidence: 99%

On the Geomorphic, Meteorological, and Hydroclimatic Drivers of the Unusual 2018 Early Summer Salt Dust Storms in Central Asia

2023

JGR Atmospheres

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“…The average annual temperature is 9 C. Soil-forming rocks are represented by loess-like loams, which are fairly homogeneous and have properties similar to those of loess. The topography is flat, and the depths of gullies do not exceed 5 m. Thus, this area can be considered a reference for a vast territory with Kastanozems formed on loess-like loams in a moderately dissected relief.The soil cover was dominated by the Kastanozems (Pankova & Chernousenko, 2018) and Solonetzes. The vegetation cover was heterogeneous.…”

Section: Study Regionmentioning

confidence: 99%

Influence of grazing on the structure and biological activity of dry steppe soils of the southern Russian Plain

et al. 2021

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A comparative analysis of physicochemical and biological properties of Kastanozems and Solonetzes, the two most common soil types in the Caspian region of the post-Soviet territory was carried out. The carbonate, salt, Corg, mineral N (NH 4 + and NO 3 À ) contents, microbial biomass (measured by ds-DNA and phospholipids), and activity of 17 hydrolases involved in the C, N, P, and S cycles were measured along the grazing attenuation gradient near a typical sheep farm with year-round grazing. Heavy grazing increases the number of Solonetz areas, they occupy up to 70% of the soil cover. Further away from the farm the areas decrease, and Kastanozems dominate there instead.Both in Kastanozems and Solonetzes, heavy grazing leads to soil salinisation, accumulation of carbonates and nitrates, decrease in ammonia and Corg content, microbial biomass, and enzymatic activity. At moderate grazing, a significant increase in microbial biomass and enzymatic activity throughout the soil profile, particularly in the 0-10 cm layer was found; at light grazing, it was observed mainly in deeper soil layers, not in the upper 0-10 cm. The microbial biomass and enzymatic activity of soils did not directly follow grazing load and was maximal at moderate grazing, where negative effect of reducing phytomass is compensated by large inputs of animal excreta, stimulating development of soil microbial community. Compared to Kastanozems, Solonetzes were more resistant to pasture load, and under heavy grazing, their properties changed to a lesser extent.

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Quantification of the Parameters of Zones and Facies of Chestnut Soils in Russia on the Basis of the Climatic-Soil-Textural Index

et al. 2019

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Comparison of Chestnut Soils of Central Asia with Their Analogs in Other Soil-Geographical Provinces of the Dry-Steppe Zone of the Eurasian Subboreal Belt

Cited by 11 publications

References 1 publication

On the Geomorphic, Meteorological, and Hydroclimatic Drivers of the Unusual 2018 Early Summer Salt Dust Storms in Central Asia

On the Geomorphic, Meteorological, and Hydroclimatic Drivers of the Unusual 2018 Early Summer Salt Dust Storms in Central Asia

Influence of grazing on the structure and biological activity of dry steppe soils of the southern Russian Plain

Quantification of the Parameters of Zones and Facies of Chestnut Soils in Russia on the Basis of the Climatic-Soil-Textural Index

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